Results 71 to 80 of about 3,492 (211)
Angewandte Chemie, Volume 138, Issue 33, 10 August 2026.Ordered L12‐Pt3Mn intermetallic alloys are uniformly deposited onto atomically dispersed Mn–N–C supports. The synergistic effect between MnN4 sites and Pt3Mn elevates interfacial binding strength and dissolution barriers while favorably weakening *OH adsorption. It delivers exceptional catalytic activity and stability in fuel cells, serving as an ideal
Gongjin Chen +8 more
wiley +2 more sources
Small, EarlyView.Density functional theory calculations and microkinetic modeling were carried out on 108 dual‐atom catalysts with varied metalmetal distances ranging from 2.2 to 3.5 Å. The results reveal that moderate spacing of around 3.0 Å promotes bridging oxygen adsorption and dissociative reduction pathways, weakens the hydroxylhydroperoxyl scaling relationship ...
Yu Mao +7 more
wiley +1 more source
PtPd Hybrid Composite Catalysts as Cathodes for Proton Exchange Membrane Fuel Cells
Energies, 2020 In this work, PtPd hybrid cathodic catalysts were prepared for a proton exchange membrane fuel cell (PEMFC) application by two different strategies. The first strategy was the physical mixing of bimetallic PtPd onto partially reduced graphene oxide (PtPd/
Yazmín Yorely Rivera-Lugo +8 more
doaj +1 more source
Small, EarlyView.Pt nanoparticle stability during accelerated stress testing at high anodic potentials was investigated using identical location TEM on a corrosion‐resistant boron‐doped diamond (BDD) electrode. Changes in nanoparticle size, position, and response with respect to nearest neighbor distance on a particle‐by‐particle basis were tracked using machine vision
Daniel Houghton +7 more
wiley +1 more source
Smart Molecules, EarlyView.Fe–N–C catalysts suffer from radical attack during oxygen reduction. By immobilizing oxophilic Yb2O3 nanoparticles near Fe–N4 sites as efficient radical scavengers, the catalyst achieves enhanced activity and stability. Abstract The practical application of Fe–N–C catalysts in proton exchange membrane fuel cells is substantially limited by their ...
Jiayu Liu +4 more
wiley +1 more source
Sensors, 2018 To prolong the operating time of unmanned aerial vehicles which use proton exchange membrane fuel cells (PEMFC), the performance of PEMFC is the key. However, a long-term operation can make the Pt particles of the catalyst layer and the pollutants in the
Chi-Yuan Lee +3 more
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.A scalable dual‐functional strategy yields simultaneously sulfonated and nanosized cellulose for proton exchange membranes with continuous hydrogen‐bond networks. These sustainable membranes exhibit low‐humidity proton conductivity twofold higher than Nafion 212, providing a robust solution for next‐generation fuel cells.
Nan Li +6 more
wiley +1 more source
Fish Scales: A Multifunctional Biomaterial from Nature
ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
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ChemElectroChem, Volume 13, Issue 16, 18 August 2026.Acidic ORR on biomass‐derived carbon is described by partially separable electronic and transport contributions. Defect‐derived electronic states are associated with the onset region, whereas connected three‐dimensional pore pathways are associated with accessibility in the transport‐influenced regime.
Ravi Singh +11 more
wiley +1 more source
International Journal of Informatics, Information System and Computer EngineeringThis study evaluates Proton Exchange Membrane Fuel Cell (PEMFC) efficiency using mathematical models based on the Nernst and Butler-Volmer equations. Developed in MATLAB, these models simulated output current utilizing experimental parameters temperature,
Bishwash Paneru +5 more
doaj +1 more source